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  1. awk 'BEGIN{print "Period","min","max"}
  2.        NR==1||(NR%10==0){mi=ma=$2}
  3.       {$2<mi?mi=$2:0;$2>ma?ma=$2:0}
  4.       NR%9==0{print ++i,mi,ma}'
Success #stdin #stdout 0.02s 5264KB
comments (?)
stdin 
a     3
b     4
c     5
d     4
e     3
f     2
g     1
h     2
i     3
j     4
k     5
l     6
m     5
n     4
o     3
p     2
q     1
r     0
s     1
t     2
u     3
stdout 
Period min max
1 1 5
2 0 6
https://ideone.com/3Z8Bkd
language:
Bash (bash 5.0.3)
created:
10 years ago
visibility:
secret

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